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( No Model.) 3 Sheets--Sheet 1..

- 0. B. RUMSEY.

POSITIVE SHUTTLE MOTION FOR LOOMS. No. 404,987,

PatentedJune 11, 1889.

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(No Model.) 3 SheetsSheet 2; O. B. RUMSEY.

POSITIVE SHUTTLE MOTION FOR LOOMS. No. 404,987. Patented June 11, 1889-.

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UNITED STATES PATENT OFFICE.

CHARLES B. RUMSEY, OF HOMER, NEIV YORK, ASSIGNOR TO THE VIBE FABRICCOMPANY, OF SAME PLACE.

POSITIVE SHUTTLE-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 404,987, dated June 11,1889. Application filed August 5, 1887. Serial No. 246,206 (No model.)

To all whom, it may concern.-

Be it known that 1, CHARLES B. RUMsnY, of Homer, in the county ofCortland and State of New York, have invented a certain new and usefulPositive Shuttle-Motion for Looms; and I do hereby declare the followingto be a full, clear, and exact description of the same,- reference beinghad to the accompanying drawings, forming a part of this specification,and to the figures and letters of reference marked thereon.

My present invention relates to positive shuttle-motions for looms,particularly to that class employed for weaving wire fabrics, thoughcapable of being employed equally as well in connection with looms forweaving other fabrics, and has for its object to improve theconstruction of the devices for operating the shuttle-carriers; and itconsists in certain novelties of construction and combinations of parts,all as I will now proceed to describe.

In the drawings, Figure 1 is a side elevation of a loom-frame, showingthe application of my invention thereto; Fig. 2, a front view of thesame, showing the lay swung in, with the shuttle being transferred fromthe arm on the right to that on the left; Fig. 3, a similar view withthe lay moved forward and the shuttle transferred; Fig. 4, a view withthe shuttle on the left-hand carrier and the lay moved forward. Fig. 5is a view showing the carrier in a position opposite to that in Fig. 3,the arc described by the crank-arms moving the shuttle-carriers beingindicated. Figs 6 and 7 are views showing the construction of theshuttle, the carriers, and the devices for causing their transfer fromone to the other.

Similar letters of reference in the several figures indicate the sameparts.

One difficulty with the positive shuttle-motions heretofore in use hasbeen that the devices necessary to cause a certain and rapid transfer ofthe shuttle from one side to the other of the lay have been more or lesscomplicated and easy to get out of order, and have had to depend more orless upon the operation of cams or cam-tracks, the accurate constructionof which requires the eX- penditure of much time and money, besideswhich the necessary accuracy of adjustment and maintenance in adjustedposition of the parts has been a constant source of annoyance to theloom-operators, and a practical operation of looms has enabled me todevise the hereinafter described improvement, which after a careful testof some months I have found to be very cheaply made, easily operated,very simple in construction, and capable of performing its functions inan admirable manner. One other objection to devices of this class hasresulted from the fact that the carriers have been caused to meet in thecenter of the shed for the transfer of the shuttle when they are both atthe extreme of their movement, so that they come together with a jerk,and unless the parts were accurately adjusted there would be a liabilityto break or jar some portion of the mechanism; but I propose to obviatethis by so disposing the devices that the transfer will take place whilethe receiving-carrier is moving out of the shed, the operations being sotimed that the shuttle is always passed While in motion and preferablybeyond the center of theshed, all as hereinafter described and claimed.

A represents the frame of the loom in which the warp-beam, shedding, andfabric-winding mechanisms are mounted, but all these being of theordinary construction and operating in the usual way I do not deem itnecessary to either showor specifically describe them. On the sides ofthe frame are provided vertical standards B, having the short inclinedarms at the top, to the upper end of which the swinging lay C ispivoted, as shown in Fig. 1, said lay consisting of the frameconstructed of side timbers D D and cross-timbers E E E E the firstbeing at the top, and to which the pivotbrackets e are secured, and thetwo lastbeing located near the bottom, and between these are secured thereed-dents F in any suitable manner, the upper one E pf the pair alsocarrying brackets on its lower side, in which the shuttle-carrying armsreciprocate. The lower portion of the lay and the reed-dents are sosituated relatively to the top of the frame A and the warp and fabricholding devices as that the warp will pass through the reed, and

when the lay is swung forward the lay will beat up the weft after it islaid in the ordinary manner.

As a means for swinging the lay back and forth I provide a shaft g, onthe opposite ends of which are mounted gears G, provided with crank-armsG, connected by pitmen G to brackets secured to the rear of the lay, asshown, so that by the rotation of this shaft and gears the lay will beoperated back and forth, as will be readily understood.

Mounted in bearings just below the gears G are gears II, of twice thediameter of the former, and connected by suitable gearing with the mainoperating-shaft of the loom, and these are further provided with cranksII, those on opposite ends being placed on opposite sides of the center,and the two being connected, as hereinafter described.

I I represent the shuttle-carrier arms, constructed, preferably, ofsquare tubular rods arranged to slide in bearings I 1 secured to thelower side of the timber E substantially in line with the center of thereed, and adapted to be reciprocated back and forth toward the center ofthe lay by suitable pitmen J J, pivoted to the outer ends of thecarriers I I and at their inner ends secured to the cranks K L, formedupon or secured to sprocket-wheels K L, mounted on stud-bearings on theface of the lay, so as to be capable of rotation or oscillation thereon.

It will be noted that the cranks K and L are secured on opposite sidesof the center of oscillation of their carrying-wheelsthat is, when thecrank K is above a line drawn between the centers the crank L is belowit, and vice versa, and by reason of their connection for simultaneousoperation this relative position will be maintained at all times.

The ends of the shuttle-carrying arms are provided with the recesses,and at the sides are provided spring-operated pawls, the former adaptedto co-operate with the ends of the shuttle M and the latter with a ribformed on an extension of the shuttle, said projections and recessesbeing for the purpose of holding and supporting the shuttle and thespring-catches for holding them in engage; ment, all arranged as shownin Letters Patent No. 340,523, granted me April 20, 1880, forimprovements in positive shuttle-motions for looms, whereby as the armsare brought together with the shuttle fastened in one it will beautomatically transferred from one arm to the other, the latch 23 on onedisengaging the other latch 31 y from the rib e on the shuttle andbecoming itself engaged, as described in said patent and shown in Fig.6. Of course any well-known form of shuttle engaging and disengagingdevices can be employed, as the present invention has only to do withthe mechanism for operating the shuttle-carriers.

At the upper corners of the swinging lay are provided guidesprocket-pulleys e", secured on stud-bearings and capable of freerotation thereon, and over these pass sprocketchain sections at n,connected on the side toward the front of the lay with rods Z, thesebeing connected to other chains pass ing beneath the gears K L, and theends of these chain-sections are connected by a rod or link m, as shown,the ends of sections a n being connected by suitable rods or links awith the crank arms II on the gears I-I, mounted on opposite ends of thesame shaft, so that as the latter is rotated the chains andconnecting-links will be pulled first to one side and then to the other,rotating the gears K L in opposite directions alternately.

The provision of connecting rods and links 7:, Z, and m is simply on theground of economy, as of course the chain could be eo1npleted, ifdesired, but would be much more expensive, while the portions formed bythe rods only serve to transmit motion and can just as well beconstructed as described. The chain might be dispensed with entirely anda belt employed instead, using, of course, instead of thesprocket-wheels K and L, plain wheels notprovided with teeth and relyingupon the friction to move them, and this arrangement might be used forlight yarn or silk weaving looms; but I prefer the sprocket-chain forwire-weaving looms, as the action is much more positive.

It will be of course understood that the sh uttle is only transferredand the arms brought together while the lay is swung back and the shedis open, and that the mechanism described for moving the lay is so timedwith reference to the devices moving the shuttlearms that the movementswill be caused only when nearly in this position.

From the above general description of the devices their operation willbe apparent.

Starting with the lay swung back, as in Fig. 1, the cranks G will beabout on the cen ter, the cranks II also nearly level, that toward thefront of the drawings being on the rear side of its center anddescending, thus pulling the sprocket-chain toward the left, causing thewheels K L, carrying the cranks K L, to rotate from the position shownin Fig. 2, with the shuttle-carriers nearly together, that on the rightside carrying the shuttle, and the one on the left about to receive it.Now, the continuous rotation of the cranks II in the direction indicatedcauses the sprocket-chain to be pulled to the left of Fig. 2, causing anupward motion of wheel K and crank K and a downward movement of L and L,which will cause the ends of the shuttle-carriers to be brought togetherin the shed; but from the relative position of cranks K and L it will beseen that crank K is a greater distance from its center than L and ispassing upward, and hence will cause its carrier to move the faster; butthe crank L will cross the center first and carrier I begin to moveoutward slowly, and then the carrier I will overtake it and, by reasonof the automatic engaging and disen- IIO gaging devices described,transfer the shuttle to it at this point, passing the center and movingoutward again. Then the continued rotation of gears H will, rotatinggears K and L, further cause the carriers to withdraw from the shed, andthe cranks G, moving toward their forward position, cause the swing ingof the lay forward to beat up the weft laid, the crank H on the sidetoward the front of Fig. 1 occupying nearly its lowest position, and theone on the opposite side nearly its highest, being the dead-center, andits movement causing a very slight movement of the chain.

The position the parts occupy just after the transfer has been made andthe carriers withdrawn from the shed is shown in Fig. 3, the crank Lbeing substantially in line with its center of movement, and itscarrier, holding the shuttle and crank K, being a litttle above itscenter. Now, the cranks G have caused the lay to move forward and beatup the weft, and the latter is returning to first position, so that theshuttle may be again passed. The cranks H rotating, the one on the sidenot shown in Fig. 1 begins to pull on the chain, causing the rotation ofcranks K L in a direction opposite to that just described, the carrier 1holding the shuttle, as in Fig. 3. Crank K, being nearer its center,reaches it first, and has its carrier I at the center of theshed first,and begins to move back when the carrier 1 with the shuttle comes tothis point, and the crank, being farther from the center, causes itsmore rapid movement, so that it will overtake carrier I and transfer theshuttle to it while it is receding from the center of the lay, and thechain being still moved by the crank H the carriers will move to theposition shown in Fig. 5, the shuttle being now held by carrier I, andat this point the lay is again moved forward, while the cranks H arenearly on their cen ters, thus failing to operate to any appreciableextent the chain moving the carriers.

It will be noted that the wheels K and L oscillate in corresponding arcsthe extremities of which are on opposite sides of a line passing throughtheir centers, and also that the ends of the arcs on the side toward thecarriers are nearer this line than the upper ones. Consequently thecrank which travels from the end of the are above the line and whosecarrier is about to receive the shuttle reaches a point where itscenter, crank-pin, and connection with the carrier are in line beforethe crank carrying the other carrier does, and

course carried on togetherthat is, there is no abrupt movement of theformer while the lag is in swung-in position; but while the lay is'moving backward the carriers start in, and while moving forward thecarriers start outward again, and the parts are so timed that the laymakes two swinging movements to each complete rotation of cranks H, theextreme forward position being reached while the cranks H are passingtheir centers, so that the minimum motion of the chain is pro duced.

It might be noted that the crank on the sprocket-wheel connected to thecarrier holding the shuttle always moves under its center while thecrank operating the carrierreceiving it always moves over its center,and also that the connecting-rod connected to the carrier holding theshuttle is in line with the crank and center when in extreme outwardposition, as shown in Fig. 3. These features are incident to the presentembodiment of the invention, but are probably not essential to theoperation when slightly different though equivalent devices are employedinstead of the ones shown.

The shuttle carrying and transferring devices might be employed in astationary frame, if desired, and supplemental devices employed to beatup the weft; but I prefer to employ them in connection with a swinginglay, as described.

It will of course be understood that the ordinary shedding devices areto be employed, and are operated every time the lay is moved forward;but the construction and operations of these devices are so wellunderstood by those skilled in the art that I do not deem it necessaryto enter into a detailed description of them.

I do not desire to be understood as confining myself to precisely thearrangements of mechanism herein shown nor their application towire-weaving looms exclusively, as it is evident that others could beemployed or the devices applied to looms for weaving yarn or silkfabrics; but from its practical application to wire-weaving looms I havefound it to be admirably adapted to the purpose and to possess manyadvantages over other forms of shuttle-motions known to me.

Instead of positively pulling the chain op- .eratin g theshuttle-carriers in both directions,

a single crank could be used to pull it one way and a weight or springemployed to operate it in the opposite direction, as will be readilyunderstood. V

The peculiar feature of transferring the shuttle while moving in adirection to pass out' of the shed, thus doing away with the jerkattendant upon transferring it at the center while the carriers arestationary, is avaluable and important one.

The shuttle-carriers and automatic transferring devices can, as beforestated, be of any approved construction that will operate to disengagethe shuttle from one and engage it with the other when the two arebrought together substantially in the manner described.

I claim as my invention- 1. The combination, with the shuttle,shuttle-carriers, and devices for transferring the shuttle from onecarrier to the other when the carriers are brought together, ofoscillating wheels having crank-pins connected with the carriers, andmeans for oscillating said wheels in corresponding arcs, one extremityof each of which is nearer a line drawn through their centers than theother, substantially as described.

2. The combination, with the shuttle, shuttle-carriers, and devices fortransferring the shuttle from one carrier to the other when the carriersare brought together, of oscillating wheels having crank-pins, each ofwhich is connected to the carrier on the side of the reed opposite it,and means for oscillating said wheels in corresponding arcs, oneextremity of each of which is nearer a line drawn through their centersthan the other, substantially as described.

3. The combination, with the shutt1e,shut* tle-carriers, and devices forcausing the transfer of the shuttle from one carrier to the other whenthe carriers are brought together, of oscillating wheels connected withthe carriers and adapted to oscillate in opposite directions alternatelyin corresponding arcs, one extremity of each of which is nearer a linedrawn through the centers than the other, a chain engaging said wheels,and means, substantially as described, for pulling said chain inopposite directions alternately, as set forth.

CHARLES B. RUMSEY.

\Vitnesses:

XV. II. CRANE, \V. S. SAN'rUs.

